Sparks, usually a gym buff, admitted she hasn't had as much time as she'd like to fit in workouts while she travels the country promoting Sparkle. "It's been so crazy . . . that's where really watching what I eat comes into play," she explained.

"I've been trying to stay away from all of the stuff at the airports, because that's where I've been living," the pop star, who debuted her new figure last year, shared. "I've been trying to eat a lot of salads, apples, fruits — I've been trying to stick with things like that so I can snack on those instead of being like, 'Oh look, a bag of chips! I'll just have those!'"